Automobile lock



diq 2s 1924;

T. N. BURGHART AUTOMOBILE LOCK 1922 3 Sheets-Sheet, 1

Filed Sept. 12

Oct. 28 1924,

T. N. BURGHART AUTOMOBILE LOCK Filed Sept. 12 7922 3 Sheets- Sheet 2 I gwuemto'c 1 7mm N Bu/ykari.

' T. N. BURGHART AUTOMOBILE LOCK Filed Sept. 12, 1922 5 Sheets-Sheet 5 moms M290 dri- Patented Oct. 28, i924.

THOMAS 1v. snaenenr, or PHILADELPHIA, PENNSYLVANIA.

AUTG'IJIOBILE LOCK. 7

Application filed September 12, 1922 Serial as. 587,705.

' To all whom it may concern. 7

Be it known that 1,,THO'MAS N. BURGZ-LKR'I, a citizen of the United States, residing at Philadelphia, in. the countyof Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in. of which the ilollowing Automobile Locks, is a SPGClilCfltlOll.

The object of my invention is .to provide to an automobile,

Figure 2 is a top plan view of my looking device,

Figure 3 a vertical line 3-3 of Figure 2, Figure 4 a horizontal. sectional View sectional View on the 'lheline 4 -4 ofFigure 3," is 1 Figure 5 a vertlcalsectional HE/P011 the line 55 of Figure 3,

Figure 6 a perspective detail ot' a guide bloc Figure 7 member, a

Figure 8 a horizontal section on the line 6-6 of Figure 3, showing the partsin lock-J ing position, and

Figure 9 a like view showing thefparts in unlocked position.

Referring to the drawings, the numeral 1 designates the floor board'of an automobile, 2 the brake lever, .33 the clutch lever, l a hollow standard taking through an opening in the floor. and provided at its base 'with an outwardly projecting flange .5

through which it is riveted, or otherwise secured, to a housing Fplate 6 having a downwardly projecting wall 7 on its sides and one end, and 8 a guide block enclosed by the depending wall of housing plate 6,

and riveted or otherwise secured to an angle v plate 9 which is secured to a part of the chassis as indicated at 10. The guide plate has in its under face two parallel guideways l1, a'transverse guideway 12, a central circular recess 13 and an aperture 14:- The parallel guideways 11 'embraceslidable' plates 15 each provided on its outer edge with a series of notches. A hollow pawl a perspective detail of a. pawl member (5 is slidably mounted in eachend of the transverse guldeway. Eachoi these pawl memhershas, at its. inner end, a beveled face 17 and a detent l8 adapted to en gage n the notches of rack bars if s n-111g l9, posit1oned within the hollow pawl member and having a bearing against the wall of the housing, presses'the (letentiuward. A disk cam 20 is seated in recess 13. This cam has a curved slot 21 adapted to receive pins 22, projecting from the rack bars, and a key slot 23. The face of the 'cam is provided withtwo opposite concave recesses 24, and two opposite concave re-,

cesses 25 of less depth than recesses 2 L, A

lock member 26 is supported in standard 4 by screws 27 and is equipped \Vlfill lIlQ-ilihers which permit insertion or a correspondingly designed key 28, but preclude insertionoit a key oi any other design, The rack oars 15 are shown as connected by links '29 with the brake lever 32and clutch lever 36,. bntmay heconnected with any auto;

n iohile member movement of which is essentltll to operation of the. car. slotted cap takes over the top of standard 4-, and extends suihoiently above the standard to protect the key against accidental injury:

when it is left in position for use.

{I When the lock isnot in use the beveled facesI'Z of the pawl member are seated'in the recesses 25 inthe face of cam 20. Theserecesses are not of suliicient depth to allow vdeteints- 18-to engage with. the rack bars but serve tov hold the cam against accidentalrotation. Y Whenthe car is tobe locked, key

28, which is of 'suiiicient length to engage with cam 20, isinserted, its inner end engaged with-key; slot 23 and the cam rotated until recessesQdregister with the beveled faces of the -,pawl members. These, recesses are sufiiciently deepto permit detents 18 to engage with the rack bars and the springs force them intoengagement and hold the rack bars locked against movement until the detents are disengaged by rotation of the V cam by the key.

Protection may be afforded by use of a single rackzbar and pawl member but I prefer to use the duplicate construction.

While I have described my invention as taking a particular form, it will be under-.

stood that the various parts of my invention may be changed 'without departing from the spirit thereof, and hence I do not limitmyselfto the precise constructionfset ed to ride on the face of the cam and a detent adapted to engage a notch in the f rack bar When the beveled face registers with the recess, and means for rotatably moving the cam.

'2. An automobile lock including a slidably mounted rack bar connected with an operative member of the automobile; a cam having a recess in its face; a hollow pawl member, slidable in the casing transversely 'to the rack bar, having a beveled face adapted to ride on the face of the cam and a detent adapted to engage a notch in the rack bar when the beveled face registers with the recess; aspring enclosedby the "pawl member and normally pressing it into ,mounted rack bars each connected with an engagement, andmeans for actuating the cam." V

I An automobile lock including slidably operating member of the automobile; a diskca'm havmg recesses in its face; springpressed members, slidable 1n the casing transversely to the rack bars, each having a ,beveled face adapted to ride on the face of the cam'and a detent adapted to engage a notch in a rack bar when the beveled face registers with a-recess in the cam, and'means fo'rrotatably moving the cam.

4:. Anautomobile'lock including slidably mounted rack bars each connected with an operating member of the automobile; a diskcam having opposed recesses in its face and .opposed recesses of" less depth; springpressed members, slidable m the casing ftral'isversely'to the rack bars, each havmg abe'veledface adapted to ride on the face of the cam and a detent adapted to engage a notch in a rack bar when the beveled face registers with one of'the"deeper recesses but to be held out of engagement when the beveled face registers with one of the lesser recesses.

I 5. An automobile lock including two slidably mounted rack bars, one connected adapted to ride on the face of the cam'and a. detent adapted to engage a notch in a rack bar when the beveled face registers with a recess in the cam, and meansfor rotatably moving the cam.

6. An automobile lock including a housing plate; a guide block'secured therein having parallel guideways and a transverse guideway and a recess for a cam; rack bars slidably mounted in the parallel guideways' and each connected with an operating member of the automobile; a cam rotatably seated in the recess and having opposed; recesses; spring-pressed pawl members, slidably mounted in thet-ransverse guideway, each having a beveled face adapted to" ride on the face of the cam, and a detent adapted to engage a notch in a rack bar when the beveled face registers with a recess in the cam, and means for rotatably moving-the n7. Anautomobile lock including a slidably mounted rack bar; a cam'having a recess in its face; a spring-pressed member, slidable'in the casing transve'rselyto'the rack bar, having a beveled face adapted toride on the face of the cam; key-actuated means for engaging the lock members; a

hollow standard; a key adapted to be en gaged through thestandard, and a protectin cap on'the standard.

In testimony whereof I have signed my name to this specification'in the presence 7 of two subscribing witnesses.

V THOMAS N. BURGHABT. Witnesses: I

CHAs. E. Porrs, ELIZABETH GARBE. 

